:root {
    --bg: #000;
    --ink: #fce700;
}

* {
    box-sizing: border-box
}

html,
body {
    height: 100%;
    margin: 0
}

body {
    background: var(--bg);
    color: #eee;
    font-family: system-ui, Segoe UI, Roboto, Arial, "Noto Sans";
}

/* layout central */
.landing {
    position: relative;
    height: 100%;
    display: grid;
    place-items: center;
    overflow: hidden;
}

/* girasol */
.sunflower {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    pointer-events: none;
    animation: spin 12s linear infinite;
    opacity: .9;
}

.sunflower svg {
    width: min(46vmin, 360px);
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, .5));
}

@keyframes spin {
    to {
        transform: rotate(360deg)
    }
}

/* tarjeta de entrada */
.card {
    position: relative;
    z-index: 2;
    width: min(680px, 92vw);
    background: rgba(0, 0, 0, .65);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .45);
    backdrop-filter: blur(2px);
    text-align: center;
}

.card h1 {
    margin: 0 0 6px;
    color: var(--ink);
    font-size: clamp(18px, 2.6vw + 10px, 28px);
}

.card p {
    margin: 4px 0 14px;
    color: #eee
}

.row {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.row input {
    width: min(360px, 70vw);
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, .15);
    background: #0f0f0f;
    color: #fff;
    font-size: 16px;
    outline: none;
}

.row input::placeholder {
    color: #aaa
}

.row button {
    padding: 12px 16px;
    border-radius: 10px;
    border: 0;
    cursor: pointer;
    background: linear-gradient(180deg, #ffe889, #ffd13b);
    color: #4a3700;
    font-weight: 800;
    box-shadow: 0 10px 18px rgba(0, 0, 0, .35), inset 0 1px 0 rgba(255, 255, 255, .7);
}

.row button:hover {
    filter: saturate(1.05) translateY(-1px)
}

.row select {
    width: min(360px, 70vw);
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, .15);
    background: #0f0f0f;
    color: #fff;
    font-size: 16px;
    outline: none;
    appearance: none;
}


.hint {
    display: block;
    margin-top: 10px;
    color: #c8c8c8
}